I think I am right. Kim, is this a warbling vireo? It was sitting up in the tree singing its heart out. It just went on and on. Simply beautiful. The shot on the right isn't very good, but it does show the ventral side.
Today has been cooler, sun coming out and going in. At least it has been dry enough to mow (I haven't done it, B has, most of it anyway). You can never start early because we get heavy dews at this time of the year.
Correction. The consensus seems to be that this is the Northern Mockingbird after all! I was really spooked by the size but at the same time it didn't really fit the description of the vireo very well. So there we are.